Cop winding machine with bunch builder



April 15, 1952 w. SIEGENTHALER 2,593,354

COP WINDING MACHINE WITH BUNCH BUILDER Filed April 7, 1947 I 2 SHEETSSHEET l April 1952 w. SIEGENTHALER 2,593,354

COP WINDING MACHINE WITH BUNCH BUILDER Filed April 7, 1947 2 SHEETSSHEET 2 Patented Apr. 15, 1952 UNITED STATE s PATENT OFFICE COP WINDING MACHINE WITH BUNCH BUILDER Application April 7, 1947, Serial No. 739,770 In Switzerland April 25, 1941 Section 1, Public Law 69 0, August 8, 1946 Patent expires April 25, 1961 Claims.

This invention relates to cop winding machines comprising means for producing a thread reserve.

The cop winding machine according to the present invention is provided with a thread guide which is displaced by automatic means along an axially reciprocating rod into a position appropriate for producing the thread reserve and is coupled to the thread guide carrier rod for common movement therewith by means of a locking device, for the purpose of producing the spool winding proper, whereupon the thread guide is intermittently advanced along the thread guide carrier rod by means of a separate winding feeler member.

In consequence thereof, in this machine, one and the same thread guide is instrumental in producing the thread reserve and the spool winding proper. Due to this provision the stressing, that is, the straining of the thread is decreased compared with the functioning of conventional machine types comprising an auxiliary thread guide which serves exclusively for producing the thread reserve, thus operating only at certain times, and which is now dispensable. The arrangement of the relevant parts of the machine may be such as to permit of placing the thread reserve on the spool to be wound at any desired point thereof.

In the drawings an embodiment of the invention is illustrated by way of example only, the machine shown operating to automatically intermittently remove the individual completely wound 'full spools from the position of winding and supplying empty spools to this position instead.

Fig. l of the drawings shows a side elevation of the machine with the latter in condition of operation forproducin a thread reserve;

Fig; 2 shows a portion of Fig. 1 on a larger scale;

Fig. 3 is a top plan view of Fig. 2 illustrating the relative positions of parts on the completion of the bunch or thread reserve;

Fig. 4 is a view of the thread guide carrier means partly in section;

Fig. 5 is a top plan view similar to Fig. 3 but illustrating a different condition of operation of the machine; I

Fig. 6 is aside elevational, part-view of 5; Fig. 7 shows a front elevation of the machine .part'lviin'section;

Fig. 8 is a section on the line VIII-VIII in Fig. 9 showing a former or guiding rule for the winding feeler means;

Fig. 9 is a top plan view of Fig. 3;

Fig. 10 is a part-section on the line X--X in Fig. 8, and

Fig. 11 is a detail view of a spool securing and releasing slide and associated mechanism.

The numeral I designates the machine casing exteriorly of which is mounted on an axle '2 a rotatable member 3 carrying a plurality of mounting heads 4 that are situated in a circular row and each of which is arranged on a winding spindle for the purpose of receiving a spool 5. The rotatable member 3 functions to automatically intermittently supply empty spools 5 to the position. of Winding A (Fig. 7), in a known manner, due to being rotatively advanced. In this position the winding spindle of the respective mounting head is automatically coupled to a driving shaft projecting out of the machine casing I, the coupling-engagement being maintained for the duration of the winding operation.

The empty spool 5 having arrived in the position of winding is received at its outer end by a counter holder 6 of known construction comprising a spring-loaded bolt (Figs. 3 and 5) which is mounted in a supporting bearing attached to the machine and intermittently influenced in movement lengthwise of itself by aslide l, for the purpose of securing an empty spool in position of 'mounting or releasing the spool when it is completely wound. The bolt is constituted as a handle on the side that faces away from spool 5 (Fig. 2) hence the counter holder 6 may be moved axially by hand when desired. By means of the spring that is provided, the counter holder 6 is normally held in operative position and during operation of the machine it may, by means of slide 1, be automatically moved into inoperative position for the purpose of freeing or releasing the spool when the latter is wound and finished. As shown in Fig. 7. the slide I is slidably arranged on two horizontal bars 8 and 9 that are secured to the casing I and lie together with a carrier rod Ill in one and the same vertical plane. On the car-.

rier bar 9 an angular stop H is arranged which is adjustable longitudinally of the bar and is adapted for cooperation with an abutment l2 firmly ioin'ed with an. abutment !3. The abutments l2, l3 provide a rockable member which is mounted on the slide 1 and is engaged by a stirrup l4 fastened to a reciprocatory rod |5 the other end of which is attached by means of a connecting piece IE to a slotted lever arm I! (Fig. 1) which is carried by a shaft l8 and performs periodically one revolution at a time during the operation of the machine. The connecting piece I6 is adjustable longitudinally of the slot in the lever arm The reciprocatory rod 5 is composed of several telescopically connected parts and is provided on the outer side with a helical spring I 9 surrounding it between two stop members 20, 2| the latter of which serves at the same time for connecting two parts of the reciprocatory rod l5; By this means the reciprocatory rod I5 is rendered elasmovement of slide 1 is effected by the shaft l8 (Fig. 1), which, in known fashion and through agency of supplementary gearing is connected in driving relation with the principal shaft of the machine.

A carrier member 22 which is longitudinally adjustable is disposed on the carrier rod l0, said member having an angular stop 24 on its set screw 23, the outwardly directed arm of said stop lying in a slot guide 25 which is adjustable on carrier member 22 in a direction crosswise of the rod Hi, this being rendered possible by a set screw provided on the carrier member 22, as shown in Fig. 3. The angular stop 24 is correspondingly adjustable by means of the set screw 23 and is adapted for cooperation with a spindle 25. The end of the spindle 26 remote from the machine casing is received in a mounting 2'! (Fig. 5), by means of a bushing 28, the latter being springloaded in the axial direction and is free to move transversely of said direction to some extent, so that the spindle 26 is adapted for moving transversely of the depending leg of the angular stop 24 to a limited extent. The mounting 21 in turn is adjustable relative. to the carrier rod Ill.

The spindle 26. the other end of which is"re ceived by a horizontal slot of the slot guide 25, is provided with a threaded portion 29 on its upper peripheral portion which 'does not quite extend over half the circumference of the spindle. A sleeve 36 pushed on the spindle 26 is adapted to cooperate with said threaded portion by means of an interiorly threaded portion of the bore of this sleeve. The sleeve 36 carries a feeler disc 3| secured thereto and the bore of the sleeve is larger than the diameter of the spindle 26. Due

to this provision the sleeve 33 can be disengaged from the threaded portion of the spindle 26 by an appropriate exterior influence and is then free tobe displaced along the spindle 26 unhindered.

During the operation the sleeve is intermittently advanced on the threaded portion of the guide spindle 26, due to cooperation of the feeler disc 3| with the'cop winding, as will hereinafter be more explicitly explained. On the termination of the cop winding the sleeve 30 is automatically moved into an inclined position relative to spindle 26 so that only a portion of the cooperating thread present throughout the length of the sleeve will come out of engagement with the thread on the spindle 26, and is then pushed back into initial position along the spindle.

4 a "driving member are slidably guided, one of these limbs being additionally slidably guidedby a rod 34 whereby the stirrup 33 is kept from tilting. The stirrup 33 carries a thread guide 35 by means of an upstanding arm. Between the two limbs of the stirrup 33 a sleeve 36 is arranged on the rod 32. On this sleeve a clutching sleeve 31 is loosely mounted for cooperation with clutching balls 38 by means of a conical interior surface. 'To this end the sleeve 36 is provided with bores for the reception of the clutching balls. The

balls 38 can be forced against the thread guide carrier rod 32 by means of the sleeve 31 so that the rod is coupled for common movement with the sleeve 36- by clamping action.

During the operation of the machine the drivin gearing of the latter, which gearing is enclosed in the casing I, reciprocates the thread guide carrier rod 32 in the axial direction of this rod, thereby effecting the traverse of the thread uide 35. At each change of movement of the thread guide carrier rod 32 the clutching device comprising the parts 36, 3'1 and 38 is influenced due to inherent inertia either for increasing or.

decreasing the clamping action, which action is increased if the thread guide carrier rod 32 changes over from moving to the left to'moving to the right with reference to the drawings, whereas the clamping action is decreased if the changeover takes place from movement to the right to movement to the left. 3

A compression spring 4|! interposed between the stirrup 33 and the clamping sleeve 31 tends to force the conical surface of the clamping sleeve against the clutching balls 36. A compression spring 39 interposed between the stirrup 33 and the sleeve 36 has the effect of establishing resilient operative engagement between the stirrup 33 and the thread guide carrier rod 32. On aside arm provided on the sleeve 36 a projection 4| is arranged for cooperation with the feeler disc 3|.

As the feeler disc 3| meets with the spool winding 5b in progress of formation the disc is caused to turn and move accordingly relative'to its guide spindle 26 together with the feeler sleeve 30. On the other hand the feeler disc 3| bears against the projection 4| on the sleeve 36 so that the sleeve 36 is shifted to the left with reference to the drawings along the thread guide carrier rod 32 by one step together with the locking balls 36 and the clamping sleeve 31 against the action of the compression spring 39 resting on the sleeve 36. The clamping device is then held in its new position on the thread guide carrier rod 32 by action of the compression spring 4!! bearing on the clamping sleeve 37. The clampin device being intermittently advanced in the manner explained thus accordingly advances the thread guide 35 relative to the rod 32 connected with said device by means of the stirrup 33.

In starting the cop winding the disc 3| of the winding feeler cooperates with a guiding rule constituted by a roller 42. Within the roller 42 a coil spring 43 is arranged (Fig. 10) which has the tendency to press two balls in the directions towards head pieces 45 inserted in the end portions of the roller 42 to provide through-bores with widened terminal portions for engagement with the limbs of a carrier stirrup 46. Due to the provision of inner widened portions of the bores of the head pieces 45 bearing sockets for the balls 44 are formed. These inner as well asthe outer 'On a rod 32, projecting from the machinecas- I ing the two limbs of a stirrup 33 functioning as widened portions of said bores permit the removal of the roller 42 from the carrier stirrup 46 if the roller is axially shifted to a slight extent. This construction allows of assembling the said guiding device in a simple mannerwithout the nec'e'ssity ioremp'loying any implementand, if desired, also of inspecting and exchanging the inner parts of the guiding roller 42, or of removing said parts when not in use. Again, the mounting of the guiding roller 42 by ball bearing means 44 ensures that the "roller rotate in reliable manner.

The carrier stirrup 46 connects the guiding roller 42 to a plate 41, which plate underlies a holding plate 48 to some extentand is pivotally connected to the latter plate'by means of a screw '49. A screw 50 screwed into the plate-41 protrudes through an arcuate slot 5| in the holding plate 48, whereby the plate 41 can be angularly adjusted relative to the holding plate 48. The plate 48 is provided with a scalein accordance with which the pivotal plate 41, can be adjusted by means of an index 41' connected to said plate,

sothat the position of adjustment of the pivotal plate 47 and consequently the angular position or position of inclination of the guiding roller 42 can be immediately read. The position of inclination of the guiding roller 42 determines the conicity of the initial cone of the thread winding to-be placed on-the empty spool 5.

The axial length of this initial cone is determined by cooperation of the guide spindle 26 carrying the winding feeler means 30, 3| with the angular stop 24 and can be adjusted by readjusting this stop by means of the set screw 23. The disc 3| of the winding feeler means travels along the guiding roller 42 until the guide spindle 26 {meets with the depending leg of the stop 24. By this coincidence the maximum thickness of the Winding is determined, whereupon the winding teel'er means is intermittently advanced in accordance with the position of the guide spindle "2B in parallelism with the axis of the "spool to be wound, and the cylindricalpart of the winding is then made in the length required and conl-tinuediso jas toend in a 'front. cone.

As the spool winding has almost reached the required length and therefore the winding feeler means 30, 3| approaches the end of its traverse the slide I is moved to'the left awayfrom the machine casing 'l by the reciprocatory rod l5 under the. control of the shaft 18, whereupon the sleeve '30 of the winding feelermeans is disengaged from the threaded portion 29 of the guide spindle 26 so that the feeding of the winding feeler means is on a projection I arranged on the :upper {end portion of slide 1 is rocked by the rear end of a the catch riding up on a'proje'ction 26" (Fig. 11)

fastened to the body portion of the shoulder 215T. Inconsequen'ce thereof the nose shaped front end of .thecatch 6B is moved out of engagement with the front end face of the sleeve 3|] into the chain dotted position whereby the slide 1 is free to continue its return movement into the position appropriate for eifecting the reserve winding shown "in dot and dash lines in Fig. 11. With the slide 1 in this position a tension spring 6| interposed between the 'rear arm of the catch 6|! and the slide is stressed so that on release of said catch arm by the projection 26", as the slide advances again, the catch 60 is automatically forced into engage- 'ment with the front face of the sleeve 30 anew by action of the spring 6|.

When'the slide I returns, it serves, by means of the stop I3, disposed thereon as shown dotted-in angular position in Fig. 6 to carry along the stirrup 33 along with the thread guide 35 and the locking means 36-38, while overcoming the frictional resistance involved. As soon as the feeler 30, 3| carried along by the hood-6B engages with the annular shoulder 26' (Fig. 11) provided on the spindle 26, the feeler means 33, 3| is disconnected and remains stationary. The slide 1 moves on, and through the agency of its stop 13 carries the stirrup 33 of the thread guide 35 along, while compressing the spring 39. The thread is, thus, conveyed, by means of the thread guide 35, within the embrace of the circumferential groove 5' provided in the base of the spool 5 to be wound (Fig. 3). The reserve windings 5a are then placed into this groove 5' of the rotating spool 5 (Fig. 6).

In the end phase of the return movement of the slide 1, as the thread guide 35 is moved into the appropriate position for effecting the thread a spiralspring correlated to this gear is stressed.

ceased and consequently the spool winding is finished. The slide 7 being displaced as aforesaid engages with its upper portion the counter holder-'8 and operates to disengage the counter :holder'fi from the completely wound spool.

Thereupon the revolvable member 3 is auto- .maticallyied by one step from the driving gearing of the machine for effecting the spoolexchangingat the winding position A, whereupon the slide 1 is returned together with the winding feeler rneans 3B, 31 by means of a pivotal catch (Fig. 11) mounted on a projection 1' at the upper part of one end of slide "1. For reasons of sirnplicityof illustration catch 60 is not shown "36. -38 against the frictional resistance set up. When the winding feelermeans 30, 3! meets with -an annular-shoulder 23 provided on the guide spind-le it, the pivotal catch 60 whichis mounted As soon as a recess 53 provided in the gear 53 is moved into opposed relation to the pinion 54, the slide 7 is fully retracted into initial position under the influence of the spring 19 acting between the parts of the sectional reciprocatory spindle l5. I

At the end of the return movement of the slide 1 the abutment l2 of the slide meets with the stationary angular stop ll, due to which the abutment I2 is accordingly rocked together with the abutment l3 rigidly connected thereto,

"the latter then being 'forced against a stud 52 provided on the slide '1. In consequence thereof, the abutment I 3 releases the carrierstirrup 33 which then shifts slightly in the direction away from the machine casing I while the spring 39fis' relieved. By this means the thread guide 35 conveys the thread within the embrace of the cone 5" arranged on the base of the spool 5 (Fig. 3) and since the carrier stirrup 33 then moves along anew together with the reciprocating'thread guide carrier rod 32, by the action I ofthe clutching device 36'-- 38 having been ren' {tiered effective again, the normal winding-operation for forming the thread winding 511 (Fig. '6) begins, due to the thread guide 35 contacting with and being advanced by the feeler disc 3|.

On the termination of the Winding operation the slide 1 is advanced again, the gear 53 mounted on the slide being first moved out of the embrace of the pinion 54, whereupon the gear 53 is turned back into initial position by relieving action of its related spiral spring, the said position being defined by cooperation of two stop members one of which is arranged on the gear. In consequence of the slide 1 advancing the counter holder. 6 is retracted from the completely wound spool. Thereupon the rotational feeding of the revolvable member 3 is efiected for the purpose of removing the full spool from the winding position and conveying an empty spool into said position. The previously explained-working operations are repeated in order to produce first a thread reserve and then a thread winding on the spool.-

--I claim: 7 I

1. In a cop winding machine having means for producing a thread reserve on a spool to be wound, a thread guide, an axially reciprocating carrier rod for moving said thread guide forwardly, a slide for cooperation with said thread guide for automatically moving said guide rearwardly along said carrier rod to a predetermined position for producing said thread reserve, a clutching device operatively connected with said thread guide for cooperation with said carrier tion, and spring means resisting said excess movement of said thread guide for eventually automatically setting said thread guide into position for starting said spool windingby relieving the effect of said spring means.

3. In a cop winding machine having means for producing a thread reserve on a spool to be wound, a thread guide, anaxially reciprocating carrier rod for said thread guide, a slide having a catch adapted to be drivingly connected with said thread guide for automatically moving said guide rearwardly along said carrier rod to a predetermined position in rear of the beginning of the winding for producing said thread reserve. a

clutching device for clutching said guide with said carrier rod for conjoint movement for producing the spool winding proper, winding feeler means arranged in said machine engaging the forward end of the winding and engaging the thread guide for intermittently advancing said thread guide by means of said clutching device along said carrier rod in accordance with the length of the spool winding in progress of forma- 7 tion, a pivotal catch for said winding feeler rod for coupling said thread guide and said carrier rod for conjoint movement forwardly for producing the spool winding proper, winding feeler means arranged in said machine independently of said thread guide engaging the winding and the thread guide for intermittently advancing said thread guide by means of said clutching device along said carrier rod in acfor producing a thread reserve on a spool to be wound, a thread guide, an axially reciprocating carrier rod for moving said thread guide, during a winding operation, a slide for engaging with .said thread guide for automatically moving said guiderearwardly along said carrier rod to a predetermined position in rear of the point of beginning of the winding for producing said thread reserve, a clutching device operatively connected with said thread guide for cooperation with said carrier rod for coupling said thread guide and said carrier rod for conjoint movement progressively forwardly for producing the spool winding proper, winding feeler means arranged in said machine independently of said thread guide engaging the forward end portion of the winding for intermittently advancing said thread guide by means of I said clutching device along said carrier rod in accordance with the length of the spool winding in progress of formation, catch slide from said feeler means and for moving said thread guide rearwardly in excess of the trav- 'erse of said feeler means located in position to be engaged and stressed by movement of the thread guide into thread reserve ,"producing posimeans mounted on said slide, and stop means cooperable with said catch arranged adjacent the rear end of said spool winding for releasing said slide from said feeler means by means of said catch for moving said thread guide rearwardly in excess of the length of said spool winding proper into said thread reserve producing position.

4. In a cop windingmachine adapted to pro duce a thread reserve on a spool to be wound, a thread guide, an axially reciprocating carrier rod on which said guide is carried, automatic means for moving said thread guide along said carrier rod into a predetermined position rearwardly of the beginning of the winding proper for producing said thread reserve, a clutching device for drivingly connecting said thread guide with said carrier rod for conjoint movement for producing the thread winding proper, winding feeler means arranged in said machine independently of said thread guide engaging the forward end of a winding during a winding operation for intermittently engaging and advancing said thread guide by means of said clutching device along said carrier rod in accordance with the length of the thread winding in progress of formation, a spindle yieldingly mounted in said machine for transverse deflection for guiding said Winding feeler means and adapting said feeler means to cooperate with said thread guide.

5. In a cop winding machine adapted to produce a thread reserve on a spool to be wound, a. thread guide, an axially reciprocating carrier rod on which said thread guide is mounted, automatic means for moving said thread guide along said carrier rod into a predetermined position rearwardly of the beginning of the winding proper for producing said thread reserve, a

clutching device for coupling said thread guide with said carrier rod for conjoint reciprocating movement for producing the spool winding proper, winding i'eeler means arranged in said machineindependently of said thread guide for engaging the forward end of a winding during a winding operation and for intermittently engaging and advancing said thread guide by means of said clutching device along said carried rod in accordance with the length of a spool winding in progress of formation,- a spindle mounted in said machine for yielding movement laterally forguiding said winding feelermeans 10 and adapting said feeler means to cooperate with UNITED STATES PATENTS said thread guide and means associated with said Number Name Date yielding mounting means of said guide spindle 1,668,495 Elsner May 1' 1928 for adjusting said spindle into inclined positions 2,245,305 siegenthaler June 10' 1941 in accordance with the position of the feeler 5 2,275,069 Treckmann Man 3, 1942 means. 2,300,707 Siegenthaler Nov 13, 1942 WALTER SIEGENTHALER.

REFERENCES CITED The following refei'e'nces are of record in the 10 file of this patent: 

